There is a Climbing Radiance, but I can't find a photo of it on the web.

The flowers & habit of your shrub remind me of my Shailer's Provence, but SP doesn't have the shiny foliage that yours does. Shiny foliage usually means there's some wichurana somewhere in the rose's background.

Thanks. I looked up Radiance on the web, too, and didn't find Climbing Radiance either. The reason I had ruled out Radiance was because the description I saw of it said it was a repeat bloomer and this one is not. It has one flush of flowers in mid to late spring and that's it. In the past seven years I've never seen it produce even one flower later in the season.

I did not mention thorns in my description above. It does have thorns, but if you look closely at the photos above, you can see it is not partcularly thorny. Thorns, except on old canes, are small, recurved, and spaced about an inch apart.